[eigenvalue]

The syntax isn’t really the hard part, it’s the rules around memory ownership and when you need to clone variables. There are lots of gotchas and the compiler is very unforgiving. If you want to convert your 5 functions into rust in a reasonable time instead of spending weeks grappling with the differences, just use ChatGPT and iterate by pasting in the errors from rust analyzer and the compiler.

If you actually want to learn rust then that’s a different story and you should probably check out Steve Klabnik‘s book or something like that (or just look at the sample code I linked to in my other comment from my own recent rust library for python).